package cst.a110lyj.layouttest;

import android.provider.Settings;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private EditText editText;
    private Button button;

   private void init (){
       editText =(EditText)findViewById(R.id.editText);
       button =(Button)findViewById(R.id.button7);
   }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout4);
        init();
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String msg=editText.getText().toString();
                Toast.makeText(MainActivity.this, "输入的内容是"+msg, Toast.LENGTH_SHORT).show();
            }
        });
    }
}
